Alberto Ginastera wrote his Danzas argentinas, Op. 2 in 1937. The first of the three dances, Danza del viejo boyero ("Dance of the Old Herdsman") is a quirky piece full of sudden dissonances which are caused by the left hand playing only black keys and the right hand playing only white ones. Danza de la moza donosa ("Dance of the Beautiful Maiden") is a melancholic, sensual piece full of sighing, chromatic gestures. The final movement, Danza del gaucho matrero ("Dance of the Arrogant Cowboy") is highly virtuosic and at turns wild, savage, angry, and jubilant.